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Don't perform this mod on your prized Cobra 29 LTD, use a beat up & scratched radio.


Your power output will suffer in the name of audio.

You need to figure out a solution for limiting & switching, this is just the bare bones.


Power output with 13.8 V correlates to your resting carrier before modification.

You will want your D.C. bias (carrier voltage) to be no more than half of the collector voltage.

(slightly less actually because of V drop through the modulator)